There's all sorts of utilities and such. Emacs was a grand example at the time as well. Lots of better mousetraps.
But when you bounce around to a lot of different machines, machines not necessarily in your control, "lowest common denominator" really starts to rear its ugly head.
That vast majority of my command line concoctions are burned into muscle memory.
Today, I think the base line install of modern *nixes are higher than they were back in the day, but the maxim still applies of working with what they have out of the box.